Tectonic Therapeutic, Inc. — Director's Dealing 2018

Jun 26, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AVROBIO, Inc. (AVRO)
CIK: 0001681087
Period of Report: 2018-06-25

Reporting Person: Booth Bruce (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-06-25	Common Stock	C	806711	—	Acquired	806711	Indirect
2018-06-25	Common Stock	C	3044579	—	Acquired	3851290	Indirect
2018-06-25	Common Stock	C	905188	—	Acquired	4756478	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-06-25	Series Seed Preferred Stock	$	C	3333333	Disposed		Common Stock (806711)	Indirect
2018-06-25	Series A Preferred Stock	$	C	12580199	Disposed		Common Stock (3044579)	Indirect
2018-06-25	Series B Preferred Stock	$	C	3740239	Disposed		Common Stock (905188)	Indirect

Footnotes

F1: Represents the total number of shares of Common Stock received by Atlas Venture Fund X, L.P. ("Atlas Venture Fund X"), upon the conversion of the Issuer's Series Seed Preferred Stock in connection with the closing of the Issuer's initial public offering.

F2: The shares are held directly by Atlas Venture Fund X. The general partner of Atlas Venture Fund X is Atlas Venture Associates X, L.P. ("AVA X LP"). Atlas Venture Associates X, LLC ("AVA X LLC") is the general partner of AVA X LP. Dr. Booth is a member of AVA X LLC and disclaims beneficial ownership of such securities held by Atlas Venture Fund X, except to the extent of his pecuniary interest therein, if any.

F3: Represents the total number of shares of Common Stock received by Atlas Venture Fund X upon the conversion of the Issuer's Series A Preferred Stock in connection with the closing of the Issuer's initial public offering.

F4: Represents the total number of shares of Common Stock received by Atlas Venture Fund X upon the conversion of the Issuer's Series B Preferred Stock in connection with the closing of the Issuer's initial public offering.

F5: All series of Convertible Preferred Stock automatically converted into the Issuer's Common Stock on a 4.132-for-1 basis on June 25, 2018 and had no expiration date.